20139140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1483}}^1$

素因数の和:1596

約数の個数: 48

約数和(自身を含む): 48865152

約数和(自身を除く): 28726012

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 97, 140, 194, 388, 485, 679, 970, 1358, 1483, 1940, 2716, 2966, 3395, 5932, 6790, 7415, 10381, 13580, 14830, 20762, 29660, 41524, 51905, 103810, 143851, 207620, 287702, 575404, 719255, 1006957, 1438510, 2013914, 2877020, 4027828, 5034785, 10069570, 20139140]

約数ペア:

[(1, 20139140), (2, 10069570), (4, 5034785), (5, 4027828), (7, 2877020), (10, 2013914), (14, 1438510), (20, 1006957), (28, 719255), (35, 575404), (70, 287702), (97, 207620), (140, 143851), (194, 103810), (388, 51905), (485, 41524), (679, 29660), (970, 20762), (1358, 14830), (1483, 13580), (1940, 10381), (2716, 7415), (2966, 6790), (3395, 5932)]